"Favorite" Text for Lateral Pressure Due to Offset Surcharge

[RFreund]

Basically I'm looking for a text that explains the different techniques of how to model/analyze the effects of an offset surcharge on a retaining wall.

I have a few good texts already but I have not found a text that really is devoted to explaining the different ways to analyse offset surcharges and tiered walls and when (in the authors opinion) would be the best time to use them or lists their advantages/disadvantages. Basically trying answer questions such as - using elastic techniques for flexible or rigid wall systems, when to truncate the infinite load for a tired situation, using an approximate technique as presented by NCMA, using a 45deg or some other angle then applying the surcharge load.

Thanks again.

EIT

 

[FixedEarth]

RF;

I have found getting the Boussinesq equations for point, line, strip, and uniform surcharge and creating a worksheet to work the best. Some of the benefits of this is you will realize, say, a line load of 1 k/ft is same as a strip load of 2k/ft over a 2 ft wide footing, if both have the same setback.

Also you will see, it is not only how close the surcharge load is, but the load intensity that governs too. So, either a spreadsheet or MathCAD or similar automated calculation tool will do.
As for references, Bowles, Canadian Foundation Manual, Azizi, Budhu, etc., all cover these equations.